CVE-2026-23515
Command injection in Signal K Server via WebSocket; remote shell access possible.
Is CVE-2026-23515 being exploited?
Not confirmed. CVE-2026-23515 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 4.2% probability of exploitation in the next 30 days.
How severe is CVE-2026-23515?
CVE-2026-23515 is rated Critical with a CVSS score of 9.9. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-23515?
Yes. A fix has been recorded for CVE-2026-23515. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-23515 affect?
CVE-2026-23515 affects Signal K Server (<1.5.0). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-23515?
Upgrade to 1.5.0+; review plugin security.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
OS command injection enables remote code execution; authenticated writes or unauth when security disabled.
Patch when possible
- affected< 1.5.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.